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  • Title: Genetics and outcome of atypical hemolytic-uremic syndrome in Turkish children: a retrospective study between 2010 and 2017, a single-center experience.
    Author: Conkar S, Mir S, Berdeli A.
    Journal: Iran J Kidney Dis; 2019 Sep; 13(5):316-321. PubMed ID: 31705748.
    Abstract:
    INTRODUCTION: Atypical hemolytic uremic syndrome (aHUS) is associated with mutations or antibodies that affect the regulation of the alternative complement pathway. In the recent years several studies have been published describing these mutations. In this study, the initial clinical findings, treatments and long-term follow-up results of 19 patients who were hospitalized with the diagnosis of aHUS were presented. MATERIALS AND METHODS: Nineteen patients who were diagnosed as aHUS were enrolled from January 2010 to March 2017. Initial clinical signs and clinical follow-up of patients with aHUS were evaluated. Disease causing complement factor H (CFH) mutations were determined.  Results. CFH mutations were detected in 5 of 19 aHUS cases. Of these, one was novel and 4 were previously reported. We reported here the clinical course of aHUS patients with CFH mutations (p.Glu936Asp, Val 1197Ala) and a novel mutation (Glu927Lys) which caused  previously defined aHUS. Two of the CFH mutation cases developed end stage kidney disease that required hemodialysis, 1 case developed chronic kidney disease. Two cases were in remission, one of them with supportive therapy and the other case was in remission with eculizumab treatment. CONCLUSIONS: Morbidity rate is higher in children with aHUS. The renal prognosis and morbidity rate is higher in children with CFH mutations than other children with aHUS. Poor prognosis in aHUS children with CFH mutation depends on the genetic background.
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